[Special design: low noise large air flow and high efficiency and energy-saving inteligent purification automatically enters the purification working mode when the purification parton the product is opened and automatically shuts down when the product is closed; High performance filtration system: equipped with activated carbon filter net which adsorbs cigar smoke and odor smell; The built-in Fan cause suction and grabs the smoke in reduce second-hand smoke from spreading into the air; USB charging: built in lithium-ion rechargeable 1000 mAh battery can be used continuously for 120 minutes; Light weight and portable: product size: 5.5 * 5.5 * 3.75 inches weight: 1.75 pounds light design makes it can be used in the living room bedroom office car hotel etc; Best gift: smokeless ashtray or an air purifier beautifully designed packaging is the best gift for family and friends around smoking;]